package moldat;

import java.io.File;
import java.io.IOException;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * L
 * konfiguration von allen Einstellungen
 *
 * @author Sebastian Lindner
 */
public class SettingsServlet extends HttpServlet {

    /**
     * Verarbeitet alle Post- und Get-Requests an dieses Servlet.
     *
     * @param request HTML-Request des Clients
     * @param response HTML-Response des Servers
     * @throws ServletException
     * @throws IOException
     */
    private void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        request.setAttribute("title", "Settings");
        ServletContext context = getServletContext();

        try {
            if (request.getParameter("use_ram") != null)
                ApplicationConfig.mountDatabase();
            if (request.getParameter("dbName") != null) {
                ApplicationConfig.setDbName(request.getParameter("dbName"));
                ApplicationConfig.setGeneNameDownloadUrl(request.getParameter("geneNameDownloadUrl"));
                ApplicationConfig.setGeneNameFile(new File(request.getParameter("geneNameFile")));
                ApplicationConfig.setQueryTimeout(Integer.parseInt(request.getParameter("queryTimeout")));
                ApplicationConfig.setUrlTimeout(Integer.parseInt(request.getParameter("urlTimeout")));
                ApplicationConfig.setMaxQuery(Integer.parseInt(request.getParameter("maxQuery")));
                ApplicationConfig.setMaxDbSize(Integer.parseInt(request.getParameter("maxDbSize")));
                ApplicationConfig.saveChanges();
            }
        }
        catch (Exception ex) {
            request.setAttribute("error", ex.getMessage());
        }
        request.setAttribute("dbName", ApplicationConfig.getDbName());
        request.setAttribute("geneNameDownloadUrl", ApplicationConfig.getGeneNameDownloadUrl());
        request.setAttribute("geneNameFile", ApplicationConfig.getGeneNameFile());
        request.setAttribute("urlTimeout", ApplicationConfig.getUrlTimeout());
        request.setAttribute("maxQuery", ApplicationConfig.getMaxQuery());
        request.setAttribute("maxDbSize", ApplicationConfig.getMaxDbSize());
        request.setAttribute("queryTimeout", ApplicationConfig.getQueryTimeout());
        
        context.getNamedDispatcher("SettingsPage").forward(request, response);
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}